General Information

The blower motor forces air into the vehicle's interior. The vehicle operator determines the blower motor's speed when the driver places the blower switch in one of the following positions:
1. LOW
2. MEDIUM 1
3. MEDIUM 2
4. MEDIUM 3
5. HIGH

The blower motor will only operate in any switch position other than OFF, as long as the ignition switch is in the RUN position. The blower motor and mode switches are located within the HVAC control module. The blower motor OFF input is connected in series with the HVAC control module by the off blower motor control circuit.

Depending upon the selected speed, power is provided to the blower motor from the fuse block on either the ignition 3 voltage or battery positive voltage circuit. Power and ground are provided to the HVAC control module by the ignition 3 voltage and the ground circuits.